<template>
    <div>
     <el-breadcrumb separator-class="el-icon-arrow-right">
  <el-breadcrumb-item :to="{ path: '/login' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>商品管理</el-breadcrumb-item>
  <el-breadcrumb-item>分类参数</el-breadcrumb-item>
</el-breadcrumb>
<el-card>
    <el-alert
    title="注意：只允许为第三级分类设置相关参数！"
    type="warning"
    show-icon :closable="false">
  </el-alert>
  <el-row class="cat_opt">
      <el-col>
          <span>选择商品分类：</span>
         <el-cascader
    expand-trigger="hover"
    :options="catelist"
    :props="cetaprops"
    v-model="selectedCateKeys"
    @change="handleChange" clearable >
  </el-cascader>
      </el-col>
  </el-row>
  <el-tabs v-model="activeName" @tab-click="handleClick">
    <el-tab-pane label="动态参数" name="many">
        <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加参数</el-button>
        <el-table :data="manyTableData" border stripe>
            <el-table-column type="expand"></el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
                <template v-slot="scope">
                 <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                 <el-button type="danger" icon="el-icon-delete" size="mini"  @click="removeParams(scope.row.attr_id)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
    </el-tab-pane>
    <el-tab-pane label="静态属性" name="only">
        <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible=true">添加属性</el-button>
        <el-table :data="onlyTableData" border stripe>
            <el-table-column type="expand"></el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="属性名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
                <template v-slot="scope">
                 <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                 <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
    </el-tab-pane>
  </el-tabs>
</el-card>
<el-dialog
  :title="'修改' + titleText"
  :visible.sync="editDialogVisible"
  width="50%" @close="editDialogClosed">
    <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px" >
    <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="editForm.attr_name"></el-input>
  </el-form-item>
    </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editParams">确 定</el-button>
  </span>
</el-dialog>
<el-dialog
  :title="'添加' + titleText"
  :visible.sync="addDialogVisible"
  width="50%" @close="addDialogClosed">
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
    <el-form-item :label="titleText" prop="attr_name">
    <el-input v-model="addForm.attr_name"></el-input>
  </el-form-item>
    </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addParams">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
<script>
export default {
    data(){
        return{
        catelist:[],
        cetaprops:{
                value:'cat_id',
                label:'cat_name',
                children:'children'
            },
            selectedCateKeys:[],
            activeName:'many',
            manyTableData:[],
            onlyTableData:[],
            addDialogVisible:false,
            addForm:{
             attr_name:''   
            },
            addFormRules:{
                attr_name:[
                    { required: true, message: '请输入参数名称', trigger: 'blur' },
                ]
            },
            editDialogVisible:false,
            editForm:{},
            editFormRules:{
                attr_name:[
                    { required: true, message: '请输入参数名称', trigger: 'blur' },
                ]
            }
        }
    },
    created(){
     this.gteCateList()
    },
    methods:{
    async gteCateList(){
        const {data:res} =await this.$http.get('categories')
        if(res.meta.status !==200){
            return this.$mes.error('获取商品分类失败！')
        }
        this.catelist=res.data
        console.log(this.catelist)
     },
    handleChange(){
      this.getParamsData()
    },
     handleClick(){
         console.log(this.activeName)
         this.getParamsData()
     },
     async getParamsData(){
         if (this.selectedCateKeys.length !==3){
            this.selectedCateKeys=[]
            return
        }
        console.log(this.selectedCateKeys)
        const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        {
          params: { sel: this.activeName }
        }
      )

      if (res.meta.status !== 200) {
        return this.$mes.error('获取参数列表失败！')
      }

      console.log(res.data)
      if (this.activeName === 'many') {
        this.manyTableData = res.data
      } else {
        this.onlyTableData = res.data
      }
    },
    addDialogClosed(){
        this.$refs.addFormRef.resetFields()
    },
    addParams() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName
          }
        )

        if (res.meta.status !== 201) {
          return this.$mes.error('添加参数失败！')
        }

        this.$mes.success('添加参数成功！')
        this.addDialogVisible = false
        this.getParamsData()
      })
    },
    async showEditDialog(attr_id) {
      // 查询当前参数的信息
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
        {
          params: { attr_sel: this.activeName }
        }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('获取参数信息失败！')
      }

      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 重置修改的表单
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    editParams(){
        this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
          { attr_name: this.editForm.attr_name, attr_sel: this.activeName }
        )

        if (res.meta.status !== 200) {
          return this.$mes.error('修改参数失败！')
        }

        this.$mes.success('修改参数成功！')
        this.getParamsData()
        this.editDialogVisible = false
      })
    },
    async removeParams(attr_id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该参数, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      // 用户取消了删除的操作
      if (confirmResult !== 'confirm') {
        return this.$mes.info('已取消删除！')
      }

      // 删除的业务逻辑
      const { data: res } = await this.$http.delete(
        `categories/${this.cateId}/attributes/${attr_id}`
      )

      if (res.meta.status !== 200) {
        return this.$mes.error('删除参数失败！')
      }

      this.$mes.success('删除参数成功！')
      this.getParamsData()
    },
    },
    computed:{
        isBtnDisabled(){
            if(this.selectedCateKeys.length !==3){
                return true
            }
            return false
        },
        cateId() {
      if (this.selectedCateKeys.length === 3) {
        return this.selectedCateKeys[2]
      }
      return null
    },
    titleText(){
        if(this.activeName === 'many'){
            return'动态参数'
        }
        return '静态属性'
    }
    }
}
</script>
<style lang="less" scoped>
.el-breadcrumb{
    font-size: 15px;
    line-height: 50px;
}
.cat_opt{
    margin: 15px;
}
.el-button{
   margin-bottom: 8px;
}
</style>